chr11-108281094-T-C
Variant summary
Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3
The NM_000051.4(ATM):c.3502T>C(p.Cys1168Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C1168Y) has been classified as Uncertain significance.
Frequency
Consequence
NM_000051.4 missense
Scores
Clinical Significance
Conservation
Publications
- hereditary breast carcinomaInheritance: AD Classification: DEFINITIVE Submitted by: Ambry Genetics, ClinGen
- ataxia telangiectasiaInheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), G2P, ClinGen, Laboratory for Molecular Medicine, Orphanet
- hereditary nonpolyposis colon cancerInheritance: AD Classification: MODERATE, LIMITED Submitted by: ClinGen, Ambry Genetics
- prostate cancerInheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
- sarcomaInheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
- familial ovarian cancerInheritance: AD Classification: LIMITED Submitted by: ClinGen
- gastric carcinomaInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
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ACMG classification
Our verdict: Uncertain_significance. The variant received 3 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ATM | NM_000051.4 | c.3502T>C | p.Cys1168Arg | missense_variant | Exon 24 of 63 | ENST00000675843.1 | NP_000042.3 |
Ensembl
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD2 exomes AF: 0.00000796 AC: 2AN: 251356 AF XY: 0.00000736 show subpopulations
GnomAD4 exome Cov.: 32
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Ataxia-telangiectasia syndrome Uncertain:2
This sequence change replaces cysteine, which is neutral and slightly polar, with arginine, which is basic and polar, at codon 1168 of the ATM protein (p.Cys1168Arg). This variant is present in population databases (rs749933079, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with ATM-related conditions. ClinVar contains an entry for this variant (Variation ID: 230914). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
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Hereditary cancer-predisposing syndrome Uncertain:2
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The p.C1168R variant (also known as c.3502T>C), located in coding exon 23 of the ATM gene, results from a T to C substitution at nucleotide position 3502. The cysteine at codon 1168 is replaced by arginine, an amino acid with highly dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
ATM-related cancer predisposition Uncertain:1
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not provided Uncertain:1
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 19781682) -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at